A cruel woman wrapped duct tape around her pet dog's muzzle and strangled the poor animal with its own lead, a court heard.
Hayley Cowan, 22, was jailed for four months and banned from keeping animals for life following the sickening incident in October.
After killing Staffordshire Bull Terrier Beau, she buried the dog in her garden.
The court heard how she kicked Beau in the face on October 14, and strangled the dog to death using her collar and lead the next day.
RSPCA inspector Vicki McDonald said: "It's difficult to imagine what this poor dog went through at the hands of someone she trusted. It was a heartbreaking case to investigate."
Witnesses had taken Beau from Cowan the day before the senseless killing after seeing her kick the dog twice in the face.
They gave Beau back later that night after Cowan promised not to harm her - but the following day were told the animal had run away.
Ms McDonald said: "The next morning, Cowan called them and said Beau had run off. They searched for Beau but found no trace.
"The witnesses attended that night and found the freshly dug area. They confronted her the next day but were told it was just toys that had been buried. The next night they went back and discovered the body, and called us.
"A couple of weeks later, Cowan admitted she had killed Beau and buried her in the garden at the incident location."
The RSPCA dug up the body on Bonfire Night.
Cowan, Tyldesley, Greater Manchester, was jailed at Wigan and Leigh Magistrates' Court after admitting causing unnecessary suffering. She was also ordered to pay £500 court costs.
Insp McDonald added Cowan's conviction was "mainly made possible by witnesses coming forward".
"It was very traumatic and upsetting for them, so I am very grateful," she said.
"I hope the sentence passed will give Cowan the opportunity to reflect upon her actions."
Additional reporting by Press Association
